1423012321 has 2 divisors, whose sum is σ = 1423012322. Its totient is φ = 1423012320.

The previous prime is 1423012303. The next prime is 1423012337. The reversal of 1423012321 is 1232103241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 867891600 + 555120721 = 29460^2 + 23561^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423012321 - 2⁵ = 1423012289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1423012301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711506160 + 711506161.

It is an arithmetic number, because the mean of its divisors is an integer number (711506161).

Almost surely, 2^1423012321 is an apocalyptic number.

It is an amenable number.

1423012321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423012321 is an equidigital number, since it uses as much as digits as its factorization.

1423012321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1423012321 is about 37722.8355376422. The cubic root of 1423012321 is about 1124.7850969919.

Adding to 1423012321 its reverse (1232103241), we get a palindrome (2655115562).

The spelling of 1423012321 in words is "one billion, four hundred twenty-three million, twelve thousand, three hundred twenty-one".